[Javascript] createElements(): new row in table

[borchers at tridem.de (Michael Borchers)]

 <http://michaelborchers.net/js/dom2.php> http://michaelborchers.net/js/dom2.php 
 
so far so good, adding a single cell in a row with an id works fine,
but i can't add a complete row.
 
please see the script which was supposed to do both,
what's wrong?
 

function addOrdersNumRows()
{
 var ordersNumRowsAdded = document.getElementById("orders_num_rows_added").value;
 
 for(o=0;o<ordersNumRowsAdded;o++)
 {
  mycurrent_cell=document.createElement("TD");
 
  mySelect = document.createElement("select");
  mySelect.setAttribute("name","products_id[1][products_id]");
  theOption=document.createElement("OPTION");
  theText=document.createTextNode("Produkte");
  theOption.appendChild(theText);
  theOption.setAttribute("value","1");
  mySelect.appendChild(theOption);
  
  mycurrent_cell.appendChild(mySelect);
 
  document.getElementById('trProducts').appendChild(mycurrent_cell); 
 
  //----------------------------------------------------------------------
  // works fine, but...
  //----------------------------------------------------------------------
  
  mycurrent_row=document.createElement("TR");
     
  mycurrent_cell=document.createElement("TD");
 
  mySelect = document.createElement("select");
  mySelect.setAttribute("name","products_id[1][products_id]");
  theOption=document.createElement("OPTION");
  theText=document.createTextNode("Produkte");
  theOption.appendChild(theText);
  theOption.setAttribute("value","1");
  mySelect.appendChild(theOption);
 
  mycurrent_cell.appendChild(mySelect);     
 
  mycurrent_row.appendChild(mycurrent_cell) ;  
 
  document.getElementById('tableProducts').appendChild(mycurrent_row); 
  
  //----------------------------------------------------------------------
  // won't work:(
  //----------------------------------------------------------------------  
  } // for     
}
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